Battery pack



FIG. 1 is a top, front end and one side perspective view of a battery pack showing my new design;

FIG. 2 is a bottom, front end and opposite side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is an elevational view of one side thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an elevational view of opposite side thereof;

FIG. 7 is a front end elevational view thereof; and,

FIG. 8 is a rear end elevational view thereof. 

The ornamental design for a battery pack, as shown and described. 